Windows Centralは1月21日(米国時間)、Windows 11の一部アプリがエラーコード「0x803f8001」で起動できない可能性があると報じた。影響を受けたシステムでは、ファイルシステムエラー「-2143322111」を引き起こす可能性もあるという。

Struggling with Windows 11 activation error code 0xc004c003? Discover proven, step-by-step fixes to resolve this frustrating ...

Windows 11 users are reporting a disruptive wave of application failures, with many unable to open essential system and third-party apps ...

Struggling with the frustrating Windows 11 "Memory Management" error? Discover proven, step-by-step fixes to resolve it ...

米Microsoftは1月15日（現地時間。以下同）、2026年1月のセキュリティ更新プログラム「KB5073455」を適用した「Windows 11 バージョン ...

Microsoft's January 2026 security update has broken Windows 11 apps like Notepad and Snipping Tool, introducing dual bugs ...

Windows 11 users are reporting a fresh wave of stability problems, with system applications crashing, freezing, and displaying unexpected error messages ...

Windows 11 Sandbox is completely unusable for many users due to error 0x800705b4 — but here's how to fix it.

Windows 11 users report Notepad, Snipping Tool, and other apps failing to open, showing Microsoft Store error 0x803F8001 on affected systems.

Based on a response from an independent advisor named Harold Milan to a forum post from an affected user, this error typically pops up when the Microsoft Store can't validate a license. This could be ...

Many Windows 11 users are unable to open apps on their PCs and are running into error code 0x803f8001.